Adjusting device.



No. 836,485. PATENTED NOV. 20, 1906.

A. I. CLARKE.

ADJUSTING DEVICE.

APPLICATION FILED JULY18.1906.

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ARTHUR F. CLARKE, OF BUTLER, PENNSYLVANIA.

ADJUSTING DEVICE.

Specification of Letters Patent.

Patented Nov. 20, 1906.

Application filed July 18, 1906. Serial No. 326,711.

1'0 all whom, it may concern;

Be it known that I, ARTHUR F. CLARKE, a citizen of the United States of America, residing at Butler, in the county of Butler and State of Pennsylvania, have invented certain new and useful Improvements in Adjusting Devices, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to adjusting devices for machine-packing; and its primary object is to provide means whereby the packing of an engine or other machine may be readily adjusted from the exterior of the machine without opening the machine.

A further object of the invention is to provide effective means for evenly adjusting packing within a machine, the adjustment of the packing-gland being uniform throughout its circumference.

The construction of the improvement will be fully described hereinafter in connection with the accompanying drawings, which form a part of this specification, and its novel features will be defined in the appended claims.

In the drawings, Figure 1 is a view, partly in elevation and partly in vertical section, of an adjusting device embodying the invention applied to the cylinder-head of an engine and Fig. 2 is an end elevation of the same.

The reference-numeral 1 designates a cylinder-head provided with an annular horizontally-disposed flange 2, formed with an annular recess 3 to receive a vertically-disposed internal flange 4, projecting from the inner end of a cylindrical casing 5, revolubly securedto the flange 2 of the cylinderhead by a ring 6, secured by screws 7. The casing 5 is screw-threaded on its inner surface, as shown at 8, to receive the threaded flange 9 of the packing-gland 10. The cylindrical casing 5 is formed with an annular external groove 11 to receive an oscillating ring 12, having a projecting arm 13, to which is attached a handle or lever 14. The ring consists of two connected sections. Pivotally secured to one side of the projecting arm 13 is a gravity-pawl 15, adapted to engage ratchet-teeth 16, formed upon the exterior of the casing 5. A pin 16" projects from the gland 10 into a slot 17 in the head 1 to prevent rotation of the latter. The packingchamber is designated by the numeral 18.

The utility and operation of the construction thus described will be readily understood. By means of the lever or handle 14 the oscillating ring 12 is moved forward and back to impart a step-by-step rotation to the cylindrical casing 5 by the engagement of the pawl with the ratchet-teeth of the casing. This rotary movement of the casing causes the gland 10 to move longitudinally into the packing-chamber, thus effecting an adjustment of the packing without opening the machine.

An important characteristic of the device is that the movement of the gland is even and uniform throughout its circumference, thus insuring an equal pressure upon the packing at all points.

The invention is applicable to various types of engines and other machines, and I would have it understood that it includes all such modifications and detail changes as may be resorted to without departing from the terms and scope of the claims.

What I claim, and desire to secure by Letters Patent, is

1. An adjusting device for packing comprising an internally-threaded cylindrical casing provided with external ratchet-teeth and an annular groove, a packing-gland having external threads engaging the threads of the casing, an oscillating ring surrounding said casing and guided within said annular groove, a lever projecting from said ring, a pawl pivotally secured to said lever, and means for preventing rotation of said gland.

2. The combination with a cylinder-head having a projecting annular flange, of an adjusting device for packing comprising a cylindrical casing revolubly supported on said cylinder-head flange and provided with internal threads, and a circumferential row of ratchet-teeth, a packing-gland having external screw-threads engaging the threads of said casing, an oscillatory ring surrounding the casing, a lever secured to said ring, a pivoted dog carried by said lever and adapted to engage the ratchet-teeth of the casing, and means for preventing the rotation of said packing-gland.

3. The combinationwith a cylinder-head, of an adjusting device for packing comprising a cylindrical casing revolubly supported on said cylinder-head and provided with internal threads, and a circumferential row of ratchet-teeth, a packing-gland having internal screw-threads engaging the threads of said casing, an oscillatory ring surrounding the casing, a lever secured to said ring, a pivoted dog carried by said lever and adapted to engage the ratchet-teeth of the casing, and means for preventing the rotation of said packingland comprising a pin projecting from said gland into a slot formed in the cylinder-head.

4. The combination with a cylinder-head having a flange formed with an annular recess, of an adjusting device for packing, comprising an internally-threaded cylindrical casing having an annular internal flange fit ting within the recess of the flange of the cylinder-head, and provided with a circumferential row of ratchet-teeth, a ring secured to the end of the cylinder-head flange to retain said casing in place, a packing-gland having 1 external threads engaging the threads of the casing, an oscillatory ring surrounding the casing and guided thereon, a lever projecting from said ring, a pawl pivotally secured to said lever to engage said ratchetteeth, and a pin projecting from said packing-gland into alslot in said head to prevent rotation of the g and.

In testimony whereof I afl'iX my signature in the presence of two witnesses.

ARTHUR F. CLARKE.

Witnesses: v

MAX H. SROLOVITZ, F. O. MOOLEARY 

